Answer Section or Authority Section?

David Botham dns at botham.net
Tue Feb 4 01:56:25 UTC 2003




[Clip...]
> > What I have been able to piece together is that the C root server
> > [192.33.4.12] is a BIND9 server and responds with a *referral* to my
NS
> > query and the other roots are BIND8 and respond with *answers*.  Am
I on
> > the right track?


Mark,

Thank you for the reply.

> 
> 	Yes.  The next release of BIND 8 will return referrals
> 	unless it is both offering recursion *and* recursion is
> 	requested.  In otherwords it will lie less of the time.
> 
> 	BIND 8 has a single database and is incapable of caching
> 	answers which would override glue records (NS/A/AAAA).
> 
> 	BIND 9 has multiple databases and is capable of giving
> 	different answers depending upon whether recursion was
> 	available and requested or not.  In other words it depending
> 	apon how the query was framed it will return glue or it
> 	will return the answers from the relevent child zone even
> 	when it conflicts with the glue.

Why does it matter *how* the query was made?  I would think that there
is only one right response.  In other words, from a given name server's
perspective, it should have a view of the name space and regardless of
*how* the question was asked, it should return that response.

Thanks again,

Dave...


> 
> 	Mark
> 
> > Thanks in advance,
> >
> >
> > Dave...
> >
[Clip...]



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